企业统战工作中的民族工作问题

少数民族工作是企业统战工作中的重要组成部分。创建和谐企业，必须坚持教育创新，夯实做好少数民族员工思想工作的基础；必须坚持制度创新，建立健全少数民族工作的相关制度，努力完善少数民族工作网络；必须坚持关注民生，注重协调解决好涉及少数民族员工和企业周边少数民族关系的实际问题。企业应承担好自身的社会责任，成为整个和谐社会的优秀成员。     

Crashworthiness research on S-shaped front rails made of steel–aluminum hybrid materials

In the paper, crashworthiness of the S-shaped rail extracted from the frontal frame in a car is studied. In order to reduce the peak impact force while increasing the total absorbed energy, the hybrid materials are employed in that rail, where aluminum alloy is used for its front part and advanced high strength steel (AHSS) for its back part. By designing 16 experiments based on orthogonal experiment, the effect of five influence factors with four levels on the crash performance of the steel–aluminum hybrid S-shaped front rail is emphatically investigated. These influence factors include the different material types of aluminum alloy and AHSS, the sheet thicknesses of the two parts, and length proportion for the aluminum part. The AHSS includes dual-phase (DP) steel, transformation induced plasticity (Trip) steel and Mart steel; the aluminum alloy series include 5000 and 6000 series. The research result shows that the use of steel–aluminum hybrid materials can reduce the peak impact force and the total weight for the S-shaped front rail, while the total absorbed energy can be greatly increased, so the crashworthiness and lightweight of the S-shaped front rail are significantly improved.     

Theoretical study of wetting behavior of nanoparticles at fluid interfaces

In this work, a theoretical model was developed to describe the wetting behavior of nanoparticles at liquid‐vapor interface by the integration of the renormalization group transformation, the cell theory, and the modified fundamental measurement theory with the first‐order mean spherical approximation method. The results show that the new model can be used to investigate the global behavior and surface tensions of nanoparticle/fluid systems. Particularly, the nanoparticle's wetting behavior inside critical region was discussed systematically. More important, this work proposed a methodology for calculating line tension and contact angle, showing that line tension has considerable influence on wetting properties for small nanoparticles, whereas it is negligible for large nanoparticles. Therefore, this work provides a general method for studying the wetting behavior of nanoparticles that may find wide applications in the field of chemical engineering. © 2009 American Institute of Chemical Engineers AIChE J, 2009     

火车站站前广场使用状况的调查研究——以南京火车站站前广场为例

基于使用后评价POE(Post Occupancy Evaluation)研究方法,观察广场使用者的各类活动,采访广场的使用者以及发放调查问卷等,然后对调查所获的信息和数据做分析、整理,得到POE评价分析结论,从而了解了南京火车站站前广场的使用状况,为南京火车站站前广场改善服务设施、提高管理水平提供依据,也为其它类似场所的设计、管理所借鉴。     

前置式游梁抽油机的设计计算方法

本文详细介绍了前置式抽油机的有关几何参数计算、运动分析等方面的计算方法;并用BASIC语言编制了设计计算程序。文中给出了程序框图和使用说明,并以前置式CYJ14-6-105HB抽油机的设计计算作为算例,得出了正确的结果。     

颗粒被凝固前沿排斥的临界速度模型

通过对颗粒增强金属基复合材料凝固过程中温度场，、质量分数场变化以及凝固前沿形状改变的数值模拟，建立了颗粒被凝固前沿排斥或捕获的临界速度模型，当凝固前沿的推进速度小于颗粒被凝固前沿所排斥／捕获的临界速度时，颗粒被凝固前沿所捕获的现象不会发生，并且在临界速度模型中保持其它参数为旧，而只考虑合金质量分数的影响时，发现随着合金质量分数的逐渐增加，颗粒被凝固前所排斥／捕获的临界速度逐渐减小。     

Monte carlo approach to estimating the photodegradation of polymer coatings

The degradation of a polymer coating and predicting the coating lifetime based on physical properties and distribution within the coating of the polymer binder, pigments, and fillers are economically very important. As technologies advance and allow for control of coatings at the nanoscale level, methods such as Monte Carlo can be used not only to predict the behavior of a nanodesigned coating with time but also to design coatings, such as optimizing pigment particle distributions or optimum hard and soft phase distributions of the binders in multiphase systems for maintaining the desired property with time. Erosion of the coating surface was simulated using Monte Carlo techniques where terrestrial solar flux is the initiator for polymer segment cleavage and removal. The impact on the sensitivity of the polymer adjacent to the detached polymer segment can be increased or decreased in the model based on the chemistry and surface energy of the remaining polymer matrix. Multiple phases with varying sensitivity to degradation can be modeled. The Monte Carlo generates a statistically similar surface topography and chemistry of the coating. The results of the Monte Carlo model are compared to measurable properties such as gloss, fracture toughness, and wetting contact angle, using various published correlations of the property to the surface topology. The simulated properties change through the life-time of the coating in ways that are consistent with observed behavior. Apparently, complicated changes in many properties can be described by the repeated application of simple, random processes. Presented at the 79th Annual Meeting of the Federation of Societies for Coatings Technology, October 28–November 1, 2002, in New Orleans, LA.     

鄂尔多斯盆地姬塬地区三角洲前缘储层砂体成因分析

鄂尔多斯盆地姬塬地区延长组三角洲前缘是主要的油气储集带,为了探讨该地区储层砂体成因,文章将储层砂体类型分为六种：截削式河道、完整式河道、叠加河口坝、下残坝上河、完整坝上河和上残坝上河砂体.利用短期基准面旋回原理将这六种砂体的短期基准面旋回划分三大类六亚类,并对每一亚类砂体成因进行了分析.分析表明,砂体成因明显受基准面升降、可容纳空间和沉积物补给量比值的共同控制.最后,讨论了储层砂体分布规律并建立了该地区砂体成因分布模式.对砂体成因的细致刻画不仅可以提高该地区储层预测的精度,而且对今后的勘探和开发具有一定的指导意义.     

Crystallization and wetting of ZnO-Al2O3-B2O3-SiO2 glass-ceramic for sealing to Kovar alloy

A new type of ZnO-Al₂O₃-B₂O₃-SiO₂ glassceramics seals to Kovar in electronic packaging was developed, whose coefficient of thermal expansion (CTE) and electrical resistance were 5.2 × 10⁻⁶/°C and over 1 × 10¹³ Ω·cm, respectively. The major crystalline phases in the glass-ceramics seals were ZnAl₂O₄, ZnB₂O₄ and NaSiAl₂O₄. The dielectric resistance of the glass-ceramic could be remarkably enhanced through the control of the alkali metal ions into the crystal lattices. It was found that the crystallization happened first on the surface of the sample, leaving the amorphous phase in the inner parts, which makes the glass suitable for sealing. The glass-ceramic showed better wetting on the Kovar surface, and sealing atmosphere and temperature showed great effect on the wetting angle. Strong interfacial bonding was obtained, which was mainly attributed to the interfacial reaction between SiO₂ and FeO or Fe₃O₄. This paper was presented at 2008 MRS International Materials Research Conference and won the student best paper award of the conference.     

苏北盆地码头庄油田阜一段、阜二段湖泊—三角洲沉积模型

通过分析各种沉积体的岩性、结构、沉积构造、沉积序列和电性特征，划分了苏北盆地码头庄油田阜一段、阜二段沉积相；根据滩和坝在剖面、平面以及岩性上所呈现的特征，划分了滩和坝的类型,建立了各种相的沉积模式，分析了沉积模型的演化历史。据此指出：阜一段发育三角洲前缘亚相沉积，至下而上发育前缘席状砂、河口坝、水下分流河道、水下分流间湾和水下天然堤微相，呈现出三角洲进积的特点，三角洲前缘亚相在阜一段沉积末期消失；阜二段发育滨浅湖亚相沉积，分为生物滩、鲕粒滩、灰质滩、浅湖砂坝和滨浅湖泥微相，有开阔浅湖砂坝和水下隆起区碳酸盐岩滩2种沉积模式。